JOEL BERGER grew up in Los Angeles but left for deserts and mountains once possible. He has concentrated on animals larger than a bread box which have included iconic endangered species and far lesser known species. Among them have been black rhinos and wild yaks, Andean mountain deer and the Mongolian saiga. His work has taken him to extreme heights in the Himalayas, and the most northern and southern land masses in the world; where he has studied takin in Bhutan and continues with muskoxen in the Russian and Alaskan Arctic. Joel targets not only extreme species at the edges of the planet but questions about climate change and habitat loss, including in species in the USA’s backyard – bison, pronghorn, and mountain goats. Berger’s work has been supported by the Guggenheim Foundation, Smithsonian, National Geographic, the National Science Foundation, and various other federal or state agencies. His prior books have dealt with biodiversity conservation and concentrated on topics like predator-prey and fear in the animal world as well as rhinos, moose, and horses. His latest book, ‘Extreme Conservation – Life at the Edges of the World’ will be out in summer 2018. Joel is a senior scientist for the Wildlife Conservation Society, and the Barbara Cox Anthony University Chair in Wildlife Conservation at Colorado State University